Exhibit 11 Endo Pharmaceuticals Holdings Inc. Statement Regarding Computation of Per Share Earnings (in thousands, except per share data) Three Months Ended March 31, --------- 2001 2000 ---- ---- Numerator: Net income (loss) available to common stockholders $ 5,376 $ (14,238) Denominator: 102,064 For basic per share data - weighted average shares 89,139 Effect of dilutive stock options 217 -- -------- --------- For diluted per share data 102,281 89,139 ======== ========= Basic income (loss) per share $ .05 $ (.16) ======== ========= Diluted income (loss) per share $ .05 $ (.16) ======== =========